Something wrong with baudrates

Q&A forumSomething wrong with baudrates
enn.ellandi asked 3 weeks ago

In default configuration Arduino SoftwareSerial reads correctly
?,T,,M,0.024,N,0.045,K,A*3A
$GNGGA,091444.00,5925.94067,N,02446.21736,E,1,12,0.53,24.1,M,18.5,M,,*72
$GNGSA,A,3,12,25,32,06,19,02,14,03,24,17,,,1.04,0.53,0.89,1*0C
$GNGSA,A,3,82,65,73,80,72,81,74,,,,,,1.04,0.53,0.89,2*0A
… etc
After loading conf files it shows like baourates doesn’t mach
I have tried every combination of 38400 115200 (as cof changes baudrate to 115200) baudrates in Arduino and UBX-CFG-PRT but it doesn’t help.
What is wrong?

clive1 replied 3 weeks ago

Can SoftwareSerial sustain 115200 baud on the platform chosen?
Use a hardware UART, or check signalling / bit timing with a scope.

enn.ellandi replied 3 weeks ago

I have tried both Software Serial and hardware UART in Arduino ADK and Mega different port.
Note that in Default Configuration it retrieves NMEA sentences correctly problems arised only after loading configuration files.

clive1 replied 3 weeks ago

Sorry which configuration file?
How is it configuring the module?
If it is changing baud rate or switching on UBX or RTCM3 packets these will not look like human readable ASCII.
Show what the “not working” data looks like.

enn.ellandi replied 3 weeks ago

simpleRTK2B+heading kit Moving Base & Rover
https://www.ardusimple.com/configuration-files/
clive: ” … switching on UBX or RTCM3 packets … ” – seems it just does this plus “Disable NMEA messages in all interfaces … ” in Rover
I enabled all NMEA messages and now it’s OK!

It seems to be some useful NMEA messages ralated in heading – HDN HDG HDT RMB … but uCenter deosn’t support them.

Is there any ways to get haeding/teering information exept NMEA

enn.ellandi replied 3 weeks ago

I mean heading/steering information sorry!

clive1 replied 3 weeks ago

uBlox doesn’t support those NMEA forms, nor things with cross-track error, or waypoints, etc.

Heading in the dual antenna implementations is typically recovered via the UBX-NAV-RELPOSNED packet
https://www.u-blox.com/sites/default/files/u-blox_ZED-F9P_InterfaceDescription_%28UBX-18010854%29.pdf

enn.ellandi replied 2 weeks ago

As far I understand I need to use UBX parser for my Arduino project.

There are quite many of them whitch one you suggest?

clive1 replied 2 weeks ago

Yes you’ll want something that can parse the UBX stream, ideally something that can demux NMEA, UBX and RTCM3 packets dynamically.
I write my own software for PC and embedded platforms, I’m not using third-party code/libraries.